Java Encryption Exception

Hi, I am using the Cryptix package for encryption and am using the RSA algorithm. I am generating a keypair ir Public Key and Private Key as shown below. It is generating the key pair, but when I am trying to Encrypt the message, it gives me the error: Private Key : com.sun.net.ssl.internal.ssl.JSA_RSAPrivateKey@415de6 Public Key :com.sun.net.ssl.internal.ssl.JSA_RSAPublicKey@7bd9f2 Exception in thread "main" java.lang.NoClassDefFoundError: xjava/security/Cipher at KeyGen.main(KeyGen.java:16) Could u plz. help. If in case some one could send me a sample, it would be very helpful for me. Thanx in advance. Reji. This is the program: import java.security.*; import xjava.security.*; public class KeyGen { public static void main(String[] args) { try {KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");KeyPair keypair = keygen.generateKeyPair(); PrivateKey privkey = keypair.getPrivate(); PublicKey publkey = keypair.getPublic(); System.out.println("Private Key : "+privkey); System.out.println("Public Key :"+publkey);